I've tried several of the plano items for the liquid gulp product. The one with the screw on lid had to be tightened so tight to keep it from leaking that it was very hard to get back off AND too small
I too use zip lock freezer bags (heavier duty ones) for the product in the resealable bags and then toss them in the following which I find very useful and very sealable.
Lock And Lock tupperware style containers have been my best use for gulp and gulp type baits to seal out the air. take a look:
kind of spendy but then isn't everything that is worth it? Don't let your wife see them, you will lose them unless you get them gulp stinky first!!!!!! HA HA!!
I have several different liquid Gulp stored in these 29 ouncer size (ON SALE NOW 20% off). http://shop.locknlock-usa.com/ll-standard-pp/305-square-salad-bowl-38-cups.html
I think i bought them in a set to save on them. similar to this:
love the smaller size to pack snacks in my lunch box. Pretzels fit and stay fresh for weeks at a time in one. Sandwich in another. Gulp in others. I do not see the exact set i ordered. Do know I have 3- 11 ounce, 2- 29 ounce, 1-54 ounce, and 1-135 ounce.
I stored the resealable ("dry") gulp type products in the large one, liquid gulp type in the 29 ounce, 54 ounce is ideal if you carry lots of liquid gulp type products. Smaller 11 ounce are for my lunch box.
To clean the lids if your wife would ever steal these is simple. Pull the soft seal out of the lid, wash both up and replace the seal when dry. the four snaps around the lid seal the fluid in the container very well. I just ran out into the garage, turned the containers upside down to get their sizes and STILL no leaks!! about 4 years old now. No problems with them however I don't operate the lids much in real cold weather, which i'm assuming might be a problem.
One other thing. Sign up for the update/newsletters if you are waiting for them to go on sale. They are silly enough to send you an e-mail when they do go on sale. then unsubscribe!!!! BUT they look like they are on sale now!! 20% off.
PS very very easy to open and close. Simple, no screw type lid to worry about if it is closed tight or not. 4 snaps to close and 4 snaps to lift to open.. super simple.